After you sign up you can use our high quality backlink checker and be charged by usage. Backlink checkers are very expensive to develop and maintain, so if you can afford it buy a monthly subscription to other good backlink checkers that is great. For many people the monthly cost is too expensive and they want to run a backlink report once a month or once every 2-months.This is where our backlink checker is very beneficial.We are also developing a Stand Alone version of our Backlink Checker, however it will cost more to use than if you are a subscriber to SEOWA.com